Fittings and Flanges

Fittings and Flanges

SS 310 stainless steel flange and 310 stainless steel fittings are 18-8 austenitic stainless steel flanges, with their Chromium-Nickel combination being heat resistant and oxidation resistant. SS 310 flanges is an austenitic stainless steel developed for use in high temperature corrosion resistant applications.

Chemical Properties

SS 310 MIN % 19 24      
MAX % 22 26 1.5 0.03 2 0.25 0.045 BALANCE
SS 310S MIN % 19 24      
MAX % 22 26 1.5 0.03 2 0.08 0.045 BALANCE

SS 310 fittings with its high chromium and nickel content provide solid corrosion resistance, excellent resistance to oxidation, and superior strength in temperatures up to 2100°F. Due to its high chromium and nickel content, it is superior to 304 or 309 stainless in most environments.


Grade Density (g/cm3) Melting Range °C Elastic Modulus (GPa) Mean Co-eff of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat (J/Kg.K) Electrical Resistivity (nΩ.m)
0-100°C 0-315°C 0-538°C at 100°C 0-100°C
SS 310/310S 8 1400-1450 200 15.9 16.2 17 14.2 500 780

Specification of Flange

The specified ASTM Standard Specification for Wrought Austenitic Stainless Steel Flanges is ASTM A182 with manufacturing standard such as ANSI/ASME B16.5, B16.48, BS4504, B 16.47 Series A & B, BS 10, EN-1092, DIN, etc

Mechanical Properties Of Flange

Grade Tensile Strength Yield Strength Elongation Reduction of area
[MPA] [MPA] (% in 50mm) min min %
SS 310/310S 515 205 30 50

According to application and uses in pipes and tubes SS 310 flanges are broadly grouped into different sort, for example, Welding Neck Flange(WNF) & Long Welding Neck Flange(LWNF), Slip-on Flange(SOF), Lap Joint Flange(LJW), Blind Flange, Socket Welding Flange (SWF), Threaded Flange(THW), Plate Flange.

SS 310 Flange for the most part has different face type, for example, Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), blind flange, with various class rating as 50 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, din 2.4856, 25, 40 & ANSI B16.5.

Specification of Fittings

The Specification for Wrought Austenitic Stainless Steel Pipe Fitting is ASTM A403, having Specific manufacturing Standards as ASME/ANSI B16.9, ASME B16.28, MSS-SP-43.

Mechanical Properties of Fittings

Grade Tensile Strength Yield Strength
SS 304/L/H 515 205

SS 310 Fittings are categorically available are Elbow, Reducer, Tee, Coupling, Bend, Stub End, Cap, Nipple, Washer, Cross, Union etc which are available in different types such as Welded, Seamless and Fabricated having thickness range from 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75


SS 310 Pipe Fittings and Flanges are especially used in application industries such as Power generation, Gas processing, Pharmaceuticals equipment, Off-shore oil drilling companies, Petrochemicals, Sea water equipment, Condensers, Chemical equipment, Specialty chemicals, Heat exchangers, Pulp and Paper industries.